Some observations on pollen grains in suspension in the estuary of the Delaware River

A 12,000-yr pollen record off Cape Hatteras — Pollen sources and mechanisms of pollen dispersion

“…Forest cover of both the Delaware (south of 41°N) and Chesapeake basins is mainly composed of beech-birch in the northernmost area and maple-hemlock oak-hickory in the east. Oak-pine leads to the west on the Appalachian plateau, oak-chestnut in the Appalachian dry ridges, sugar-maple and basswood in the Appalachian wetter valleys, oak-hickory in the east and finally oak to the west within the Piedmont (Groot, 1966;Brush et al, 1980;Willard et al, 2003). The Atlantic coastal plain is dominated by tulip-poplar in the north and oak-pine in the south.…”

Some current trends in palynology

“…His attempt to relate these in part to source vegetation, to some of the features of wind and water currents, and to several geological and oceanographical aspects of sedimentation and environment, is a landmark in the rise of marine palynological research (CROSS et al, 1966). Further studies were undertaken in the estuary of the Delaware River (GROOT, 1966), off the eastern coast of the U.S.A. (STANLEY, 1965b), the Bahamas (TRAVERSE andGINSBURG, 1966, 1967), in the southwestern Atlantic Ocean GROOT, 1964, 1966b;GROOT et al, in press;STANLEY, 1967), the northwestern Atlantic Ocean (STANLEY, 1966a), on the Biscay Abyssal Plain (GRoOT, 1963), in the North Sea (ZAGWIJN and VEENSTRA, 1966), the Baltic Sea (LuBLINER-MIANOWSKA, 1962), the Mediterranean (RossmNOL, 1961(RossmNOL, , 1962VRONSKIY and PANOV, 1963;KORENEVA, 1966), the Adriatic Sea (BOTTEMA and VAN STRAATEN, 1966), the Black Sea (NEUSTADT et al, 1965), the Sea of Azov (PANOV et al, 1964), the South China Sea ( VAN VEEN, 1958), the Japanese Sea (KORENEVA, 1961;BOULOUARD and DELAUZE, 1966), the Sea of Okhotsk (KORENEVA, 1957), the western Pacific Ocean (KORENEVA, 1964), the Gulf of California (CRoss et al, 1966) and ott'the coast of central Chile (GROOT and GROOT, 1966b, in preparation).…”

“…In analyzing marine-sediment samples, this long-distance water transport should be taken into account in order to prevent false palaeoecological and stratigraphical conclusions. GROOT (1966) showed that in the estuary of the Delaware River a relationship exists between the number of pollen grains and the quantity of mineral matter in suspension, suggesting that the two types of particles are predominantly transported together and in similar fashion. Earlier, Soviet researchers (KORENEVA, 1957(KORENEVA, , 1964PAYOr et al, 1964), had already demonstrated that the quantities of pollen grains and spores found in Recent marine deposits were related to the grainsize distribution of the sediment; coarse-grained sand containing less palynomorphs than muds of fine clay.…”

Palynomorph Preservation in Volcaniclastic Rocks of the Miocene Tepoztlan Formation (Central Mexico) and Implications for Paleoenvironmental Reconstruction

“…The same applies for debris flows and hyperconcentrated flows in volcanic environments (lahars) where palynomorphs are either introduced by wind, overland flow of water or erosion of loose volcaniclastic sediment. Therefore, during transport, a homogeneous mixture of pollen and spores is formed, representing available sources within the drainage basin (Groot, 1966). It is common in river settings for a significant fraction of a pollen assemblage to consist of redeposited pollen grains (e.g., Campbell and Chmura, 1994;Chmura et al, 1999).…”